.desktop file, icon and appdata are now properly exported by flatpak.
"Wayland first" flatpak, falling back to X11 if not on Wayland.
Note: this is currently potentially broken on many systems (ie. font
rendering is broken).
See https://github.com/flatpak/flatpak/issues/2861.
Might work when using Wayland + Gnome, does not seem to work on Arch +
Sway (couldn't get it working with any workaround for now).
Several smaller issues addressed.
A few untested issues might remain (Screensharing, WebRTC/Camera access)
Addresses (at least partially): #128, #132, #131, #118
Switching to an Arch based build process for easier maintenance and
using specific runners for tasks where that might be necessary.
Right now, parent/child pipelines for somewhat parallel builds for
different architectures / semi-independent pak-builds don't seem to
properly work yet due to `trigger:` not being recognized when it should,
so that's not yet implemented.
